Ignition-lock



D. S. SCARBOROUGH.

IGNITION LOCK.

APPLICATION FILED NO v. 22, 191s.

1,329,930. Patented Feb. 3,1920..

y Mgg/M@ (f1/HMM m AuNrrnn STATES" ormoni.

.DONALD s. scAaBoRoUGH, oF sT. noms, mssonnr, AssIGNoR THOMAS. WATSON, or sT. LOUIS, MISSOURI.

iGm'rIoN-Locx.

To 'all whom may concern.;

"Be it known that l, DONALD S.r SCAR- United States, re-

BoRoUGH, a citizen of the f Mlssouri, have siding at St.'Louis, State invented new and useful Improvementsinl Ignition-Locks, of which the following is a specification.

`This invention relates to locking-devices for automobiles and has for its object the provision of a locking device adapted for association with the coil box 'of an automo- 4 bile whereby the flow 'of current through the ."vibrator coils may be grounded so that the motor cannot -be started, the 'device being particularly designed for lthe protection of automobile owners against the operations of thieves. I

An important object is ,the provision of a locking devicev of this character inthe nature of 'a switch embodying a reversiblemember which'when in one position permits the'cur rent to pass normally through the vibrator coils Vand which when in another position causes the current to. be grounded sov that i Referring more particularly to the draw- Afurther object is the provision of a device of this character which is so constructed that it'will not interfere with -the operation of theordinary switch with which this type of automobile is provided. f

A further object is the provision of a lock@ 4ing device' of this character which is of heavy construction so that itv'mayv not be broken by arr ordinary blow and which is so attached toV the dash of the automobile that itv cannet be easily removed therefrom ,.without involving the expenditure of considerable time and labor which wouldresult in attracting attention to theefforts `being made. An additional object is 'theprovision of a device of this character which may be quickly J and easily installed without necessltating any material changes or alterations in the Sp-eciication of Letters Iatent.

Vdevice associated with the Ainwardly leXtendin 0F ONE-HALF T6 Patented Fens, 192e.' Application led November A22, 1918. ASerial No. 263,756.

wiring within the coil'boX, which consists f durable in; service and a general' improve- 55 ment in the art. With the above and other objects andad- -vantages in View, the Ainvention consists in the details of construction to be hereinafter morev fully described and claimed and illus-l which:-;, v

Figure l is a front elevation of a portion of theldash of an'aut'omobile showing my coil. box, the de# vice being in locked position.

Fig. 2 `is a similar view with the device shown inA unlocked position.

Fig; '3 is a longitudinal sectional view on the line 3 -3 of Fig. l.' Fig. 4 is a longitudinal sectional view on the lined-f4 of Fig. 2.

Fig'. 5 is a cross sectional view and Fig. 6 is a diagram of. the lwiring.

ings the letter`A designates the dash fthe vehicle, B designates the coil /box and' C desi nates the switch 'carried thereby.'

` device is indicated as a `whole by the letter D and comprises a h eavy block. or

bodyl() formed vpreferably of cast iron pr'o vided at one side Awith aS laterally eXtendin fiange 11 and provided at its lower end-wit 1an outwardly extending ear 12 provided with a hole 13 fora purpose tobe described. The block'is recessedf'as shown at 14 and the side edges of the recess havefomnedthereon Thel bodylof the block10 is provided within the recess 14:; with a\plurality of holes 16 through which extend .screwslby means of which the 'device 1s secured in position upon the dash A.

Intermediate its ends, theblock 10 is provided .with an opening 18 extending into the recess 14 and within this opening is secured,`in any suitable manner, a block 19 of insulating/.material such as ber, which carries Contact members 20 and 21. The sidaA g retaining flanges 15.

trated in the accompanying drawings in of the block' 10 adjacent the flange 11 is pro- -100 type of coil box illustrated is provided'L in 4o ne contact- Gr ofthe switch C. '-This par@v l ticular type of switch embodies the movable and movable vto engage Jis connected by a wire for preventing movement is provided with .passage of'conducting wires 23 and 24 which are connected vwit the contacts 20 and 21 respectively,

` The movable member ofthe device oomprises a cast iron plate 25.slidablymounte within`the recess 14 and having its side edges engageable beneath theretaining flanges 15. At one end the plate 25`is lprovided with an outwardly extending ear 26 provided with a hole 27 adapted ,to register with the holeV 13 in the ear 12. At its rear side, the plate a'recess 28 within which 1s suitably Secured, in any desired manner, a block 29.0f insulating materiall upon/which is secured a leaf spring gage the contacts 20 and 21...

The device is installed as follows The ,block 10 is disposed upon A at one side of the ,coil box C in such po-4 sition that the side flange 11 will bear ,against the side ofthe coil box andthe block issecured in such position by means of the screws 17 which passthrough thel holes 16 and into the dash.' As is well known, the its bottom with a metallic strip E which is ordinarily connected by a wire F with blade H constantly engaging the contact (Jr a contact, I which J with the magneto contact plug K. v

. In installing my device, I provide in the. side of the coil box adjacent the locking device, a pairof holes 31 through which thel wires 23 and 24 are led. In connecting my device,- the usual wire F is disconnected from the contact G and is connected with the wire 24 and the .wire 23 is connected with the contact G. Whenmy protective device is in locked position, as shown in Figs., 1 and 3,A the plate 251is so', ear 26 therebywill be disposed' with the ear 12 on the block 10.'

32 is engaged through the A padlock ofi.the plate 25. When the plate is in this position, one end of the-leaf spring will bear against the c ontact21 and the 'other e'nd spring will contact withl the'back-wall ofl the recess 14 below,'the block of. insulation i '19. 11i-win be observed'that wheat-hamm are in this position, tion I-I of the switch C is moved into en-v gagement with the contact I, as would be done 1n attempting current passing through-'the /vibrator coils will be grounded 'through the spring 30 and person de-A sires to start the motor,fitis necessary rst so 'disposed 30 adapted to en-v the dash,

disposedthatthe in Contact when the movable por-4 to start the motor,- the..contact member y.block. 1twill be impossible to stant 'the motor. v

' When the properly authorized conjunction move and reverse the plate ear 26 thereon willbe of thelopking device. When'the parts are in this positioili, the leaf spring 30will be t at the contacts 20 vand 21 and will form `a' bridge so that the current will flow uninterruptedly from the magneto through the switch C and to the metallic strip E upon which the vibrator coils rest. Y

- It will be observed that this 'device is extremely simple. in construction and installation and that; its cost will therefore be reduced-'to the minimum. It is also apparent that the device v'shouldbe and preferably is constructed from any material which will resist any ordinaryjblowto which it might be subjected in the attempt to break the same.

While I have shown and described the preferred embodiment `of the invention, it will of course be readily understood that I reserve -the right to make such changes in the form construction andarrangement of parts as will not depart from the spirit of the invention. or the scope of the subjoined claims.

I claim 1.y A locking device of the character deits ends -Will bear upon scribed comprising a relatively stationary' `metallic body, a pair df spaced contacts carried'by and insulated from said body, a relatively movablemember slidably associated with said relatively stationary member and a contact member carried vby said slidable member, said slidable member being reversible whereby 1n one position said last named contact member will bridge said irst named contact members and in its other position saidlast named contact member will ground one of` said first named, contact members upon said relatively stationary member.

2. A device of the character comprising a 'metallic'block, guide flanges formed thereon, from said block, a plate' slidably associated withsaid block, andJ engaging beneath said flanges, an ear extending `from 'said' plate, and provided. 'with an aperture `adapted toregistewith'the aperture 1n 'said irst named 115, block,' and a 'contact' plate, a pair of contacts disposed within and insulated lfrom said member carried by said plate,sa 1d.plat be-jf ing reversible whereby in 'one positionth'ere- 'of said last named contactl .member will` bridge said first named contact members and an apertured ear extending v in the other position thereof said last named -will 'ground one of said first named contact members upon said 3. An'- ignition units, in conjunction witha switch as'-` lock` adapted to be usedinwith the coilbox of 'an automo! bile', the coil box `containing-a plurality of i soeiated with `the coilcbox and units; comsaid .plateis" in one position, said plate be-4 prising a metallic block provided iwith a 'ing reversible whereby saidI last named con- 10 recess, a lpair of contacts disposed Within tact member will engage one of said first said recess and insulated from saidblock, named contacts' and the material of said i a`plate slidably associated With said block block adjacent said recess. l and adapted to cover said recess, and a con- In testlmony whereof I alli; my signature.

tact member carried by said plate and adapt!v ,A ed to bridge said first Ananled contacts when DONALD S. SCARBOROUGH. 

